flyscreen-handle.scad

   1 // -*- C -*-
   2
   3 opening_height = 7.84 - 0.3 + 0.60;
   4 opening_depth = 6.0; // 7.88;
   5 openingcnr_dia = 2.75;
   6 opening_topprotr = 1.54;
   7
   8 gap = 0.25;
   9
  10 retain_rad = 1.65;
  11 retain_protr = 0.35;
  12 retain_hgap_adjust = 1.5;
  13
  14 retain_stalk_len = 8.0;
  15 retain_stalk_h = 1.5;
  16 retain_bend_gap = 2.0;
  17 retain_empir_angle = -10;
  18 retain_pushmore_adj = 0.0;
  19
  20 hgap_empir_adjust = -0.5 -2.50;
  21
  22 topprotr_rad = 0.35;
  23
  24 bot_overlap = 4;
  25 bot_w = 3;
  26
  27 handle_w = 10;
  28 handle_rh = 3;
  29 handle_rcut = 3;
  30
  31 cutout_gap = 1.5;
  32
  33 total_len = 40;
  34 retain_len = 8;
  35 basics_len = 8;
  36
  37 overret_hch = 5;
  38
  39 peg_width = 3;
  40
  41 // calculated
  42
  43 ins_irad = openingcnr_dia/2 + gap;
  44 ins_orad = openingcnr_dia/2 + opening_height - gap;
  45 ins_th = ins_orad - ins_irad;
  46
  47 handle_x0 = ins_irad + hgap_empir_adjust;
  48 handle_h = bot_overlap + ins_th;
  49 handle_y0 = -ins_orad-bot_overlap;
  50 handle_y1 = handle_y0 + handle_h;
  51
  52 handle_x1 = handle_x0 + bot_w + handle_w;
  53
  54 topprotr_y = -ins_irad + opening_topprotr;
  55
  56 retain_mxy = [handle_x0 - retain_rad - retain_hgap_adjust,
  57               -ins_orad + retain_rad - retain_protr];
  58
  59 retain_cutout_h = retain_rad * 2 + retain_bend_gap;
  60
  61 overret_gaplen = retain_cutout_h / cos(retain_empir_angle);
  62
  63 peg_space_width = retain_stalk_len -
  64   (handle_x0 - retain_mxy[0]) / cos(retain_empir_angle);
  65
  66 peg_height = retain_cutout_h - (retain_rad + retain_stalk_h)
  67   + retain_pushmore_adj;
  68
  69 retain1_len = retain_len + retain_stalk_len;
  70 retain1_base = total_len - retain1_len;
  71
  72 module InsertSection(){
  73   hull(){
  74     translate([-ins_irad, -ins_irad])
  75       mirror([1, 0])
  76       square([opening_depth - ins_irad, 0.1]);
  77     translate([-ins_irad - topprotr_rad,
  78                topprotr_y - topprotr_rad])
  79       circle(r=topprotr_rad, $fn=10);
  80   }
  81   translate([0, -ins_orad]) square([ins_irad+1, ins_th]);
  82   intersection(){
  83     translate([0, -ins_irad])
  84       mirror([1,1])
  85       square([100, opening_depth]);
  86     difference(){
  87       circle(r= ins_orad);
  88       circle(r= ins_irad, $fn=20);
  89     }
  90   }
  91 }
  92
  93 module HandleSection(){
  94   difference(){
  95     hull(){
  96       translate([handle_x0, handle_y0])
  97         square([bot_w, handle_h]);
  98       for (y= [handle_y1 - handle_rh/2,
  99                handle_y1 - ins_th + handle_rh/2]) {
 100         translate([handle_x1 - handle_rh/2, y])
 101           circle(r= handle_rh/2, $fn=20);
 102       }
 103     }
 104     hull(){
 105       for (x= [handle_x0 + bot_w + handle_rcut/2,
 106                handle_x1 - handle_rh/2 - handle_rcut/2]) {
 107         translate([x, handle_y1])
 108           circle(r = handle_rcut/2, $fn=20);
 109       }
 110     }
 111   }
 112   hull(){
 113     for (y= [handle_y1 -   handle_rh/2,
 114              handle_y1 - 3*handle_rh/2])
 115       translate([handle_x1 - handle_rh/2, y])
 116         circle(r = handle_rh/2, $fn=20);
 117   }
 118   translate([ handle_x1 - handle_rh*2,
 119               handle_y1 - handle_rh/2 ])
 120     circle(r = handle_rh/2, $fn=20);
 121 }
 122
 123 module RetainSection(){
 124   translate(retain_mxy) {
 125     rotate(retain_empir_angle) {
 126       circle(r=retain_rad, $fn=20);
 127       translate([0, -retain_pushmore_adj])
 128         square([retain_stalk_len + 1, retain_stalk_h]);
 129     }
 130   }
 131 }
 132
 133 module PegSection(delta){
 134   square([peg_width,
 135           peg_height + delta]);
 136 }
 137
 138 module PegSectionForDemo(delta){
 139   translate(retain_mxy)
 140     rotate(retain_empir_angle)
 141     translate([retain_stalk_len - peg_space_width,
 142                retain_stalk_h - retain_pushmore_adj])
 143     PegSection(delta);
 144 }
 145
 146 module RetainCutout(gapping=false){
 147   translate(retain_mxy) {
 148     rotate(retain_empir_angle) {
 149       translate([-50, -retain_rad]) {
 150         square([50 + retain_stalk_len,
 151                 retain_cutout_h]);
 152       }
 153     }
 154   }
 155 }
 156
 157 module GappingSection(){
 158   difference(){
 159     union(){
 160       InsertSection();
 161       HandleSection();
 162     }
 163     RetainCutout(true);
 164   }
 165 }
 166
 167 module WithRetainSection(){
 168   difference(){
 169     union(){
 170       InsertSection();
 171       HandleSection();
 172     }
 173     RetainCutout();
 174   }
 175   RetainSection();
 176 }
 177
 178 module BasicSection(){
 179   InsertSection();
 180   HandleSection();
 181 }
 182
 183 module Handle(){
 184   bs1 = retain_len + overret_gaplen + 4;
 185
 186   translate([0,0,0])
 187     linear_extrude(height= retain_len)
 188     WithRetainSection();
 189
 190   translate([0,0, bs1])
 191     linear_extrude(height= basics_len)
 192     BasicSection();
 193
 194   translate([0,0, bs1+0.1]) mirror([0,0,1]) {
 195     intersection_for (sl=[0,1]) {
 196       multmatrix([[1,0,0,0],
 197                   [0,1,sl,0],
 198                   [0,0,1,0],
 199                   [0,0,0,1]])
 200         linear_extrude(height= overret_gaplen + 10, convexity=100)
 201         BasicSection();
 202     }
 203   }
 204
 205   linear_extrude(height=total_len, convexity=100) GappingSection();
 206
 207   translate([0,0, retain1_base]) {
 208     intersection(){
 209       linear_extrude(height=retain1_len, convexity=100)
 210         WithRetainSection();
 211       translate([retain_mxy[0], retain_mxy[1], 0])
 212         rotate([0,0, retain_empir_angle])
 213         translate([retain_stalk_len, -30, 0])
 214         multmatrix([[1,0,-1,0],
 215                     [0,1,0,0],
 216                     [0,0,1,0],
 217                     [0,0,0,1]])
 218         cube([50, 60, 50]);
 219     }
 220   }
 221 }
 222
 223 module Demo(){
 224   color("red") translate([0,0,-3]) BasicSection();
 225   color("blue") translate([0,0,3]) WithRetainSection();
 226   color("orange") translate([0,0,7]) PegSectionForDemo(0);
 227 }
 228
 229 module Test(){
 230   linear_extrude(height=2) {
 231     WithRetainSection();
 232     translate([0, -handle_y0 + topprotr_y + 10])
 233       BasicSection();
 234   }
 235 }
 236
 237 Demo();
 238 //HandleSection();
 239 //InsertSection();
 240 //WithRetainSection();
 241 //BasicSection();
 242 //GappingSection();
 243 //Test();
 244 //Demo();
 245 //Handle();